Collar, N. & Boesman, P. (2019). Monk Parakeet (Myiopsitta monachus). In: del Hoyo, J.,
Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/54677 on 20
February 2019).